Jesus teaches us today that fasting needs to be done. He points out that there is no need of fasting when the bridegroom is around, i.e., Himself. But there comes a time when the bridegroom is taken away and then there will be the need to fast. This refers to the Passion and Death of Christ. We cannot expect not to fast because Our Lord himself undergoes his Passion and suffering for our salvation. We fast in union with Him. We fast in order to feast with Him when we resurrects.